Hey guys hope everybody is doing well in their Hobby life I'm in the middle of a project and I'm kind of giving up in have installed a pixhawk on a Hirobo shuttle plus helicopter, it's a 30 class nitro heli with a flybar system (it's a mechanical pitch system) so think it's the H1 setting please correct me if I'm wrong, so up to now I have made a kind of a 4 step vibration damping system that the Pixhawk is sitting on, I have installed it as closely possible to the propeller shafts to kind of stay on the CG point of the heli , I have installed another base on the boom for the GPS to sit on and just in have made a cover that covers the Pixhawk from propeller wind pressures, it basically deflects the air pushed from the main prop for it not to push the Pixhawk in different ways while flying, I will post pictures, and now to the weird and annoying part if the project:
I have a Taranis X9D Plus as a transmitter with a S-Bus connection going into pixhawk
I have all 5 servos plugged directly to a 10A Castle Creation BEC AND also feeding the Pixhawk and it's derivatives
Now I have the Ch8 of Pixhawk going to throttle servo
Ch1 to aileron servo
Ch2 to pitch servo
Ch3 to elevator servo
Ch4 to Rudder servo
Now on the Taranis sideI use a V8FR-II and a encoder for the only reason that as read on the Wki page Chanels should be crossed , I know I could cross them internally but I'm not the best at it with a Taranis
So Now evrything should technically work fine ... but no it can't be that easy...
Throttle servo works , ailerons error works alone , rudder servo mixes aileron with it ... and rudder movement is sooo slow pitch servo works in incensed mode and even when I reverse it in taranis it does not want to change direction... elevator doesn't work at all...
This bird is getting me crazy, I think that maybe it's a Taranis setup that I'm doing wrong ? Please help me put this heli back to flying
Looke like you have basic setup issues. I am not familiar with this hirobo model but by the pictures it does not appear to be H1 setting (Although it is not very clear). It is more like swash plate based system. I quick web search indicates that is model initially has H1 system while the later models had swash plate (http://www.vrhc.co.uk/rc%20helicopters/japan/Hirobo/Shuttle/Shuttle... ). However you may know better. I have never used H1 system as all my heli’s are swash driven directly by servo type. Can you please check if only 1 servo controls the pitch or all servos need to move to control the pitch. That will give you an idea of how to move forward. You have posted pics of controller being installed. I do not think that it is important at this point. You should get proper servo movement, irrespective of how the controller is installed. It is only after you start the motor that vibration isolation matters.
That Heli looks like it has a Mechanical Swashplate, "H1".
Check in the radio tab that one stick only moves it's respective bar and that you don't have any CCPM (for newer flybar helicopters" mixture in your Taranis.
It would be better if you could use any Frsky receiver that has Sbus, or even CPPM and reorder the channels on your Taranis, it's easy and there's info on youtube.
Don't worry about the slow tail and cyclic. Go to the Heli setup on the Initial setup tab and click the green button "manual" and check movements, they should be quick since there's no PID loop.
I had a lot of trouble with my first Pixhawk traditional heli build, There's really very little information, but it's really rewarding.
Keep us posted, i'll probably be builing a raptor 50 in the near future.